Credenza or bookcase



FIG. 1 is a perspective view taken from the front, top and left side; and,

FIG. 2 is a perspective view thereof, taken from the front, bottom, and left side.

The shading that can be seen on the “screen” portion of the claimed design is a type of shading that represents surface material. 

The ornamental design for a credenza or bookcase, as shown and described. 